Home / 5,147.24-7,104.20-2,909.12

Finding the Fourth Proportional to 5,147.24, 7,104.20 and 2,909.12

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Solution

The fourth proportional to 5,147.24, 7,104.20 and 2,909.12 is: 4,015.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.24 : 7,104.20 = 2,909.12 : x
  2. Step 2: Convert to fraction form
    5,147.24/7,104.20 = 2,909.12/x
  3. Step 3: Cross multiply
    5,147.24x = 7,104.20 × 2,909.12
  4. Step 4: Simplify right side
    5,147.24x = 20,666,970.30
  5. Step 5: Solve for x
    x = 20,666,970.30/5,147.24
  6. Step 6: Final answer
    x = 4,015.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.